78 CRUISE OF THE STEAMER CORWIN. 



420. Tunninculus sparverius U-inn-). Vii'ill. Spakruw Hawk. 



Mori^ or le.ss ;itiuii<l:ui1 t lirniin'hDut the rcyiuii. hut priiiriiially in the inniiiitaiii districts. 

 Nests ;it)i)ut the luiilille ul' J iily. 



430. Circus Hudscnius I /./yn;.l, \'icill. M.Misii ILwvK. 



l'\iuii(l ;iliuiic'aiitly aluui;- I ln' Iiiwer river; quite eomiiioii. Nests in the spi-iice timber early 

 ill •July. 



447. Archibuteo lagopus Sancti-Johamiis (O' ;)«'/. ). Riilijn: Ameiuc.vn Rouini-LKma;!) H.wvK. 



Noted ill several iiistaures. ami the nests found in two instances, along tiie lower ri\er. A 

 regular iiiii;'raiit to Northern Alask'a.. 



451. Hali^etus leucocephalus tl.iiiu.). Surif/. B.\\a> E.vule. 



A rei;-ula.r sum niei- resident and nestiuL;' coininoidy in the iiiouiitain districts. The most 

 common hird of [irey in the region. 



474. Lagopus albus (';//(.). Aial. Wll.l.nw I'TAiniKiAN. 



Found i-omiiionly in pairs, IjiiI a|i|iarenlly not alnindaut in any locality. A resident of the 

 inomitain and tahle-hmd district. The yoiiiij.;' are fledged aJioiit the niidille of July. 



513. Squatarjla Helvetica {Linn.}. Ciir. ISlack-bellied Plovek. 



A c(.)nimon resident of every part of this region, usually found in pairs, and nests in every 

 locality. 



514. Charadrius pluvialis IJiiii. (roLOE.N Pi.Over. 



A small tlock observed near the e.xtreme point reacheil is the only record in tlie region. 

 Tliey p>roba.i)ly nest in tlie far north. 



517. iEgialites semipalmatus liiniiiii. .Semu'almated Plovek. 



( )ljserved coniinonly in pairs througliout the h)wer river districts. Nest on the sand or 

 gravel banks early in July. They ar(^ not an aljundaiit species. 

 527(1. Maciohamphus griseus scolopaceus (.s'o//), C'oiifs. Red-bellied Snipe. 



A very alnmdant species on the upper portion of the river. After the nesting season they 

 associate in large Hocks a,nd migrate tlit^ latter jiart of August. 



538. Actodromas miiuitilla iVinll.). l!ji. Least Sandpiper. 



Found throughout the region, chiefly in pairs, but n.:)t abundant anywhere ; undoulitedly a 

 regular resident. 



541. Eieunetes pusillus (Liiiii.). Casn. Kemipalmated Sandpiper. 



A moilerattdy abundant wader, fcnuid chiefly along the lower ri\er, iind nesting wherever 

 found. 



542. Calidris arenaria (L/i))/.). ////f/. SaNDERLING. 



(.)l>si^rvetl on several occasions along the gravelly banks oi the lower ri\-er. Apparently a 

 summer resident, although irregularly distributed. 



549. Totanus flavipes lf;//n7.). \'irill. Yellow-leus. 



A noisy denizen of the marshes a\mg the lower vivei', not e.X-tending into the mountain 

 district. Nests in the marshes, and is easily known by its peculiar habits. 



559. Numenius Hudsonlcus Lnlli. Hcdsonian Ccklew. 



All abundant species on the upper river, in the fall they i-es((rt to the coast region in 

 large flocks previous to migration. 



560. Numenius boreali8(/''(<)-.s/.), I.alh. ESKIMO CURLKW. 



This species, together with the red-bellied snipe and the lludsonian curlew, forms the 

 three most abundant species characteristic of the region. 



